每一天都是新的机会。你可以建立在昨天的成功之上,或者把失败抛在脑后重新开始。
物理学不仅仅是寻找答案,它关乎提出正确的问题。
To feel much for others and little for ourselves; to restrain our selfishness and exercise our benevolent affections, constitute the perfection of human nature.